_Edward II PLANTAGENET _+
| (1284 - 1327) m 1307
_Edward III PLANTAGENET _|
| (1312 - 1377) m 1327 |
| |_Isabella of FRANCE ____
| (1292 - 1358) m 1307
_John of Gaunt PLANTAGENET _|
| (1339 - 1398) |
| | _William III AVESNES ___+
| | | (1286 - 1337)
| |_Philippa of AVESNES ____|
| (1311 - 1369) m 1327 |
| |_Joan of VALOIS ________+
| (1294 - 1341)
|
|--Thomas BEAUFORT
| (1376 - 1426)
| ________________________
| |
| _Payne ROET _____________|
| | (1310 - 1380) |
| | |________________________
| |
|_Katherine ROET ____________|
(1350 - 1403) |
| ________________________
| |
|_________________________|
|
|________________________